12 Monkeys TV Series Wiki

Season 4 is the final season of 12 Monkeys that aired on Syfy from June 15 to July 6, 2018 for over 4 weeks. This season contained a total of eleven episodes.[1]


Main cast[]

Recurring cast[]

Guest stars[]

Special guest cast[]


Syfy announced that it had renewed the series for a fourth and final season on March 16, 2017, alongside of the premiere date announcement for Season 3.[3]

The first scripts for Season 4 were written in March 2017.[4] Filming began in April 2017. The final draft of the script for the series finale, entitled "The Beginning", was completed on June 20, 2017.[5]


Image Title Original Airdate Episode # Overall #
The end cassie and cole.jpg "The End" June 15, 2018 1 37

The final conflict with the Army of the 12 Monkeys begins when the Witness returns to Project Splinter.

Cole, Cassie and Jones in 4.02.jpeg "Ouroboros" June 15, 2018 2 38

Travelers come face to face with ghosts from their past when they find themselves maneuvering around their own timelines.

45 rpm pic 1.jpg "45 RPM" June 15, 2018 3 39

Cassie travels back in time to confront a younger Olivia; Cole helps Jennifer find the meaning behind her final Primary vision.

Legacy.jpg "Legacy" June 22, 2018 4 40

Team Splinter go back in time to the wild frontier in search of a weapon to destroy the Witness.

After.jpg "After" June 22, 2018 5 41

A clue to breaking the cycle leads Cole and Cassie to the 1960s; Zalmon Shaw returns.

DieGlocke.jpg "Die Glocke" June 22, 2018 6 42

The team infiltrates a Nazi gala to steal an artifact as "Die Glocke"; their operation comes undone when French Resistance interferes and an unexpected guest arrives.

Daughters Olivia and Emma.jpeg "Daughters" June 29, 2018 7 43

Jones sends Hannah back in time to 2007 on a personal mission that could be the key to everything.

Demons 1491.jpeg "Demons" June 29, 2018 8 44

Everything changes when the team finally climbs the steps and rings the bell in the Middle Ages.

One Minute More Goines.jpeg "One Minute More" June 29, 2018 9 45

The beginning of the end approaches as Cole and Cassie embark on their final mission.

The Beginning Pt 1 Titan.jpeg "The Beginning Part 1" July 6, 2018 10 46
The final battle against the Witness as the fate of time and mankind hangs in the balance. All the pieces finally come together to mark the end of the beginning.
The Beginning Pt 2 Cole.jpeg "The Beginning Part 2" July 6, 2018 11 47

When all hope is lost, Cole must complete his cycle so that his younger self will one day arrive at the end with the answer.